Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4443275 | Method of producing a magnetic gate | Wilhelm Ertl, Ulrich Lachmann | 1984-04-17 |
| 4394190 | Magnetic gate and method of production thereof | Wilhelm Ertl, Ulrich Lachmann | 1983-07-19 |
| 4369376 | Magnetic gate and method of production thereof | Wilhelm Ertl, Ulrich Lachmann, Gunter Wirnharter | 1983-01-18 |